{% load bootstrap4 %}

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1,
     shrink-to-fit=no">
    <title>Learning log</title>

    {% bootstrap_css %}
    {% bootstrap_javascript jquery='full' %}
</head>
<body>

  <nav class="navbar navbar-expand-md navbar-light mb-4 border">

      <a class="navbar-brand" href="{% url 'learning_logs:index' %}">
          Learning Log
      </a>

      <button class="navbar-toggler" type="button" data-toggle="collapse"
      data-target="#navbarCollapse" aria-controls="navbarCollapse"
      aria-expanded="false" aria-label="Toggle navigation">
          <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarCollapse">
          <ul class="navbar-nav mr-auto">
              <li class="nav-item">
                  <a class="nav-link" href="{% url 'learning_logs:topics' %}">
                      Topics
                  </a>
              </li>
          </ul>
          <ul class="navbar-nav ml-auto">
              {% if user.is_authenticated %}
                <li class="nav-item">
                    <span class="navbar-text">Hello, {{ user.username }}.</span>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="{% url 'users:logout' %}">Log out</a>
                </li>
              {% else %}
                <li class="nav-item">
                    <a class="nav-link" href="{% url 'users:register' %}">Register</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="{% url 'users:login' %}">Log in</a>
                </li>
              {% endif %}
          </ul>
      </div>
  </nav>

  <main role="main" class="container">
      <div class="pb-2 mb-2 border-bottom">
          {% block page_header %}{% endblock page_header %}
      </div>
      <div>
          {% block content %}{% endblock content %}
      </div>
  </main>
</body>
</html>